installing new brake lines on the front and it is leaking out of the top of the nut on the hard line were it connects to the brake hose. installing rough country ss brake lines. does any one have any suggestiontions to fix?or why it could be leaking?

 

Did you use any sort of thread sealer?

 

no.. but its not leaking out of the threads. it is leaking out the top of that fitting

 

Got a pic, maybe pointing to the leak?

 

Wait, is it on the back axle and leaking from the hard lines?

 

To get a good seal the internal of the tubing flair needs to sit cleanly on the mating flair in the fitting. Then the fitting/nut needs to seat cleanly on the back side of the flair. If either of these is not intact, clean and tight it will leak along the tube.

Did you do a double flair on that end? Is the flair perpendicular to the tube end?

Were there any nicks or cracks in the tubing flair?

Did any rust or other debris fall in as you were putting it together?

Did the tubing seat cleanly as you were lightning the fitting?

Did you use two wrenches to make sure it is tight?

 

i just pulled it apart and cleaned and checked it. it all seams good i tightened it back down with two wrenches just as i did before then bleed it. it stopped out of the top of the fitting and now its is very minimal seaping out of the threads. so i will check it in morning and see if its got any seaping